Question: What is the Hepatitis B gene?
Paraphrase: What is another name for the Hepatitis B gene?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q6853 wdt:P2293 ?obj . ?obj wdt:P31 wd:Q7187 } 
Answer: GRIN2A, HLA-DPA1, HLA-DPB1, HLA-DQB2, UBE2L3